Description
The Counter Rotating Twin Screw and barrel is majorly for using for all kinds of pvc products extrusion, our base material used is SACM645 with bimetallic spraying.
Material:High quality alloy steel
1)38CrMoAlA
2)42CrMo
3)9Cr18MoV
Treatment
1)Heat-treatment
2)Nitriding treatment
3)Hard-chrome electroplated
4)Bimetallic-alloy coating spraying
Technical index:
Nitrided Layer depth: 0.4mm-0.8mm
Hardness of Nitrided Layer: Above HV960-1040
Streightness of Screw: 0.015mm/1000mm
Cr-Plating layer: 0.02mm-0.06mm
Bimetallic Layer: 2-4 mm